Preheat your oven to 350 degrees Fahrenheit. Line a rimmed baking sheet with aluminum foil. Set aside. Cut the loaf of bread length-wise and width-wise, being careful to not cut all the way through the loaf.
1 loaf round artisan bread
Melt the butter in a small saucepan or skillet over medium heat. When it is completely melted, gently whisk in the buffalo sauce until it is fully combined. Add the scallions and the blue cheese crumbles and remove from the heat.
8 tablespoons butter, 1/2 cup buffalo sauce, 4 green scallions, 1/4 cup blue cheese crumbles
Add the shredded cheese to the bread by pushing it into the cuts you've just made. This will help keep the bread open when you pour in the sauce.
1 cup mozzarella cheese
Using a spoon, add the sauce to the bread, getting some of the sauce into each of the cracks. Make sure you use all of the sauce.
Tent loosely with aluminum foil and bake for 25 to 30 minutes or until the cheese is fully melted. Serve immediately.